Use Turbo Mode (shift click the green flag) Reset the server with SPACE (IMPORTANT!) Press D for Debug menu. For Frisk's selection, use arrow keys to highlight and Z to select. X to go back. Z to go to next dialog. For Sans' selection, use the mouse for the buttons and arrow keys for selection. Z to go to next dialog, X to go back. Instructions for attacks will be on-screen. That's all for now.
This is a private Undertale 2-player battle "bad time" simulator game made for use by Junior64570 and yours truly. It is currently a beta and only has a few attacks.